The Senate refused to halt debate Friday on an energy bill featuring nearly $24 billion in tax breaks,
Senate Democrats and some Republicans said the measure would protect petrochemical companies from lawsuits for polluting water with MTBE, a gasoline fuel additive,
The bill was easily passed earlier this week by the House of Representatives.
A vote to end the filibuster failed by three votes, 57-40.
Senate Democratic Leader Tom Daschle proposed deleting the MTBE measures and putting the remainder into a spending bill to fund the government, according to
Senate Republican Leader Bill Frist of Tennessee said he would hold "at least one more vote," possibly early next week, to try to end the filibuster before Congress adjourns for Thanksgiving.